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[PULL v3 29/32] vfio: Add routine for finding VFIO_DEVICE_GET_INFO capab
From: |
Alex Williamson |
Subject: |
[PULL v3 29/32] vfio: Add routine for finding VFIO_DEVICE_GET_INFO capabilities |
Date: |
Sun, 01 Nov 2020 14:03:09 -0700 |
User-agent: |
StGit/0.21-dirty |
From: Matthew Rosato <mjrosato@linux.ibm.com>
Now that VFIO_DEVICE_GET_INFO supports capability chains, add a helper
function to find specific capabilities in the chain.
Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
---
hw/vfio/common.c | 10 ++++++++++
include/hw/vfio/vfio-common.h | 2 ++
2 files changed, 12 insertions(+)
diff --git a/hw/vfio/common.c b/hw/vfio/common.c
index 920786a23e0b..57f55f0447d6 100644
--- a/hw/vfio/common.c
+++ b/hw/vfio/common.c
@@ -1159,6 +1159,16 @@ vfio_get_iommu_type1_info_cap(struct
vfio_iommu_type1_info *info, uint16_t id)
return vfio_get_cap((void *)info, info->cap_offset, id);
}
+struct vfio_info_cap_header *
+vfio_get_device_info_cap(struct vfio_device_info *info, uint16_t id)
+{
+ if (!(info->flags & VFIO_DEVICE_FLAGS_CAPS)) {
+ return NULL;
+ }
+
+ return vfio_get_cap((void *)info, info->cap_offset, id);
+}
+
bool vfio_get_info_dma_avail(struct vfio_iommu_type1_info *info,
unsigned int *avail)
{
diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h
index 1d14946a9d66..baeb4dcff102 100644
--- a/include/hw/vfio/vfio-common.h
+++ b/include/hw/vfio/vfio-common.h
@@ -216,6 +216,8 @@ struct vfio_info_cap_header *
vfio_get_region_info_cap(struct vfio_region_info *info, uint16_t id);
bool vfio_get_info_dma_avail(struct vfio_iommu_type1_info *info,
unsigned int *avail);
+struct vfio_info_cap_header *
+vfio_get_device_info_cap(struct vfio_device_info *info, uint16_t id);
#endif
extern const MemoryListener vfio_prereg_listener;
- Re: [PULL v3 23/32] s390x/pci: Add routine to get the vfio dma available count, (continued)
[PULL v3 25/32] s390x/pci: create a header dedicated to PCI CLP, Alex Williamson, 2020/11/01
[PULL v3 27/32] s390x/pci: clean up s390 PCI groups, Alex Williamson, 2020/11/01
[PULL v3 28/32] s390x/pci: use a PCI Function structure, Alex Williamson, 2020/11/01
[PULL v3 29/32] vfio: Add routine for finding VFIO_DEVICE_GET_INFO capabilities,
Alex Williamson <=
[PULL v3 30/32] s390x/pci: get zPCI function info from host, Alex Williamson, 2020/11/01
[PULL v3 31/32] hw/vfio: Use lock guard macros, Alex Williamson, 2020/11/01
[PULL v3 32/32] vfio: fix incorrect print type, Alex Williamson, 2020/11/01
Re: [PULL v3 00/32] VFIO updates 2020-11-01 (for QEMU 5.2 soft-freeze), Peter Maydell, 2020/11/02